CERT-FR Advisory: Multiple Android Vulnerabilities Patched in November 2026 Security Bulletin
CERT-FR issued advisory CERTFR-2026-AVI-1443 on 03 November 2026 covering multiple vulnerabilities affecting all versions of Google Android lacking the 1 November 2026 security patch level. The flaws can allow remote arbitrary code execution, privilege escalation, and breaches of data confidentiality. The advisory references Google's November 2026 Android Security Bulletin, which lists a very large number of CVEs affecting the Android framework and associated components. CERT-FR directs administrators and users to the vendor bulletin for applicable patches.
Entenda a falha
A vulnerabilidade
CERT-FR advisory CERTFR-2026-AVI-1443 (3 November 2026) covers a very large set of CVEs fixed in Google's November 2026 Android Security Bulletin. According to CERT-FR, some of them allow remote arbitrary code execution, privilege escalation and breaches of data confidentiality. The advisory does not describe individual CVEs, components or attacker requirements, and the vendor did not specify severity for this round. Every Android version without the 1 November 2026 security patch level is affected; that patch level is the fix.
Como foi descoberta
The available article, from CERT-FR, only says that multiple vulnerabilities were discovered in Google Android and points to the vendor's security bulletin dated 2 November 2026 for the patches. It does not say who found the flaws, how they were reported, or whether any were exploited in the wild.
Explicação gerada por IA a partir da matéria e dos artigos, em 05/11/2026 16:18.
2 exploits públicos
Há código de exploração publicado no Exploit-DB para CVE-2026-43284. O código não é reproduzido aqui: o link leva à fonte, e a explicação foi escrita pela IA a partir do arquivo publicado.
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Linux Kernel - Local Privilege Escalation
This Exploit-DB entry is a write-up, not exploit code. It describes a local privilege escalation chaining three Linux kernel flaws: the xfrm ESP handling with extended sequence numbers, RxRPC in-place decryption, and ESP-in-TCP fragment coalescing. Together they would let an unprivileged local user write into the page cache and alter a setuid binary such as su to get root. It needs local code execution on an affected kernel with these networking features. Maturity is unclear: only a sample console output is shown, the code is linked externally, and it is unverified.
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Linux Kernel - Local Privilege Escalation
A local unprivileged user chains two Linux kernel bugs: an xfrm ESP logic error with Extended Sequence Numbers that allows small writes into the page cache, and an RxRPC flaw that decrypts cached pages in place. This lets the attacker alter the in-memory copy of a setuid binary and get root. It needs local code execution on an affected kernel (2017 to May 2026) with these features reachable. The file is just a write-up with claimed output; the code is linked externally and unverified.
Detalhes técnicos
- Impact includes remote code execution, privilege escalation, and confidentiality breaches across unpatched Android devices.
- Severity is unspecified by the vendor for this round of fixes.
- The affected scope is any Android device not updated to the 1 November 2026 security patch level.
Remediação
- Apply the patches referenced in the Google Android Security Bulletin dated 02 November 2026.
Linha do tempo
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CERT-FR Advisory: Multiple Android Vulnerabilities Patched in November 2026 Security Bulletin
ler a análise desta fonte ocultar
CERT-FR issued advisory CERTFR-2026-AVI-1443 on 03 November 2026 covering multiple vulnerabilities affecting all versions of Google Android lacking the 1 November 2026 security patch level. The flaws can allow remote arbitrary code execution, privilege escalation, and breaches of data confidentiality. The advisory references Google's November 2026 Android Security Bulletin, which lists a very large number of CVEs affecting the Android framework and associated components. CERT-FR directs administrators and users to the vendor bulletin for applicable patches.
Technical Details
- Impact includes remote code execution, privilege escalation, and confidentiality breaches across unpatched Android devices.
- Severity is unspecified by the vendor for this round of fixes.
- The affected scope is any Android device not updated to the 1 November 2026 security patch level.
Remediation
- Apply the patches referenced in the Google Android Security Bulletin dated 02 November 2026.